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Finding the Fourth Proportional to 160,459.53, 221,437.53 and 87,865.48

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Solution

The fourth proportional to 160,459.53, 221,437.53 and 87,865.48 is: 121,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,459.53 : 221,437.53 = 87,865.48 : x
  2. Step 2: Convert to fraction form
    160,459.53/221,437.53 = 87,865.48/x
  3. Step 3: Cross multiply
    160,459.53x = 221,437.53 × 87,865.48
  4. Step 4: Simplify right side
    160,459.53x = 19,456,713,894.68
  5. Step 5: Solve for x
    x = 19,456,713,894.68/160,459.53
  6. Step 6: Final answer
    x = 121,256.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.